<template>
	<div class="roles">
		<!-- 面包屑导航 -->
		<el-breadcrumb separator=">">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>权限管理</el-breadcrumb-item>
			<el-breadcrumb-item>角色列表</el-breadcrumb-item>
		</el-breadcrumb>

		<!-- 卡片视图 -->
		<el-card>
			<!-- 添加角色列表区域 -->
			<el-row>
				<el-col>
					<el-button type="primary" @click="dialogVisible = true">添加角色</el-button>
				</el-col>
			</el-row>

			<!-- 角色列表区域 -->
			<el-table :data="rolelist" border stripe>
				<!-- 展开列 -->
				<el-table-column type="expand">
					<template slot-scope="scope">
						<el-row :class="['bdbottom',il === 0 ? 'bdtop' : '','vcenter']" v-for="(item1,il) in scope.row.children" :key="item1.id">
							<!-- 一级权限 -->
							<el-col :span="5">
								<el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
								<i class="el-icon-caret-right"></i>
							</el-col>
							<!-- 二级三级权限 -->
							<el-col :span="19">
								<!-- 通过 for 嵌套二级权限 -->
								<el-row :class="[i2 === 0 ? '' : 'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
									<!-- 二级权限 -->
									<el-col :span="6">
										<el-tag type="success" closable @close="removeRightById(scope.row,item2.id)"> {{item2.authName}} </el-tag>
										<i class="el-icon-caret-right"></i>
									</el-col>
									<!-- 三级权限 -->
									<el-col :span="18">
										<el-tag v-for="(item3,i3) in item2.children" :key="item3.id" type="warning"
										 closable @close="removeRightById(scope.row,item3.id)">
											{{item3.authName}}
										</el-tag>
									</el-col>
								</el-row>
							</el-col>
						</el-row>
					</template>
				</el-table-column>
				<el-table-column type="index"></el-table-column>
				<el-table-column label="角色名称" prop="roleName"></el-table-column>
				<el-table-column label="角色描述" prop="roleDesc"></el-table-column>
				<el-table-column label="操作">
					<template slot-scope="scope">
						<el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">编辑</el-button>
						<el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)">删除</el-button>
						<el-button type="warning" icon="el-icon-setting" size="mini" @click="showsetRightDialog(scope.row)">分配权限</el-button>
					</template>
				</el-table-column>
			</el-table>
		</el-card>

		<!-- 添加角色的对话框 -->
		<el-dialog
		  title="添加角色"
		  :visible.sync="dialogVisible"
		  width="30%"
			@close="addDialogClosed">
		  
		  <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="80px">
		    <el-form-item label="角色名称" prop="roleName">
		      <el-input v-model="addForm.roleName"></el-input>
		    </el-form-item>
				<el-form-item label="角色描述" prop="roleDesc">
				  <el-input v-model="addForm.roleDesc"></el-input>
				</el-form-item>
			</el-form>
		    <span slot="footer" class="dialog-footer">
		      <el-button @click="dialogVisible = false">取 消</el-button>
		      <el-button type="primary" @click="addRoles">确 定</el-button>
		    </span>
		</el-dialog>
		<!-- 修改角色对话框 -->
		<el-dialog
		  title="修改角色"
		  :visible.sync="editDialogVisible"
		  width="30%"
			@close="editDialogClosed"
		  >
			<!-- 主体区域 -->
		 <el-form :model="editForm" :rules="addFormRules" ref="editFormRef" label-width="80px">
		   <el-form-item label="角色名称" prop="roleName">
		     <el-input v-model="editForm.roleName"></el-input>
		   </el-form-item>
			 <el-form-item label="角色描述" prop="roleDesc">
			   <el-input v-model="editForm.roleDesc"></el-input>
			 </el-form-item>
			 
			</el-form>
			
		  <!-- 按钮区域 -->
		    <span class="dialog-footer" slot="footer">
		      <el-button @click="editDialogVisible = false">取 消</el-button>
		      <el-button type="primary" @click="editUserInfo">确 定</el-button>
		    </span>
		  
		</el-dialog>
		<!-- 分配权限对话框 -->
		<el-dialog
		  title="分配权限"
		  :visible.sync="setRightDialogVisible"
		  width="50%"
			@close="defKeys = []"
		  >
			<!-- 主体 -->
			<el-tree
			  :data="rightslist"
			  show-checkbox
			  node-key="id"
				default-expand-all
				:default-checked-keys="defKeys"
			  :props="treeProps"
				ref="treeRef">
			</el-tree>

			<!-- 按钮区域 -->
		    <span slot="footer" class="dialog-footer">
		      <el-button @click="setRightDialogVisible = false">取 消</el-button>
		      <el-button type="primary" @click="allotRights">确 定</el-button>
		    </span>
		</el-dialog>
	</div>
</template>

<script>
	export default {
		data() {
			return {
				//所有角色列表
				rolelist: [],
				//添加角色对话框开关
				dialogVisible:false,
				//添加角色存放
				addForm:{
					roleName:'',
					roleDesc:''
				},
				//验证规则
				addFormRules:{
					roleName:[
						{required:true,message:'请输入角色名称',trigger:'blur'},
						{min:3,max:10,message:'用户名在3到10个长度之间',trigger:'blur'}
					],
					roleDesc:[
						{required:true,message:'请输入角色描述',trigger:'blur'},
						{min:5,max:15,message:'角色描述在3到10个长度之间',trigger:'blur'}
					]
				},
				//修改对话框开关
				editDialogVisible:false,
				//根据id查询的内容
				editForm:{},
				//分配对话框的开关
				setRightDialogVisible: false,
				//所有权限数据
				rightslist:[],
				//树形绑定对象
				treeProps:{
					label:'authName',
					children:'children'
				},
				//默认选中的节点
				defKeys:[],
				//当前将分配角色id
				roleId:''
			}
		},
		created() {
			//所有角色列表
			this.getRolesList()
		},
		methods: {
			//获取所有角色列表
			async getRolesList() {
				const {
					data: res
				} = await this.$http.get('roles')
				if (res.meta.status !== 200) {
					this.$message.error('获取数据列表失败！')
				} else {
					this.rolelist = res.data
				}
			},
			//监听添加对话框关闭
			addDialogClosed() {
				this.$refs.addFormRef.resetFields()
			},
			//添加对话框确认按钮
			addRoles() {
				this.$refs.addFormRef.validate(async valid => {
					if(!valid)return
					//发起网络请求
					const {data:res} = await this.$http.post('roles',this.addForm)
					if(res.meta.status !== 201) {
						this.$message.error('添加角色失败！')
					}else {
						this.$message.success('添加角色成功！')
						this.dialogVisible = false
						//重新获取用户列表
						this.getRolesList()
					}
					
				})
			},
			//监听修改对话框关闭
			editDialogClosed() {
				this.$refs.editFormRef.resetFields()
			},
			//点击修改按钮
			async showEditDialog(id) {
				const {data:res} = await this.$http.get('roles/' + id)
				if(res.meta.status !== 200) {
					return this.$message.error('查询角色信息失败！')
				}else {
					this.editForm = res.data
				}
				this.editDialogVisible = true
			},
			//修改用户信息并提交
			editUserInfo() {
				 this.$refs.editFormRef.validate(async valid => {
					if(!valid) {
						return
					}else {
						const {data:res} = await this.$http.put('roles/' + this.editForm.roleId,{roleName:this.editForm.roleName,
						roleDesc:this.editForm.roleDesc})
						if(res.meta.status !== 200) {
							return this.$message.error('数据获取失败！')
						}else {
							this.editDialogVisible = false
							this.getRolesList()
							this.$message.success('角色信息修改成功')
						}
					}
				})
			},
			//根据id删除对应用户信息
			async removeUserById(id) {
				 const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
				    confirmButtonText: '确定',
				    cancelButtonText: '取消',
				    type: 'warning'
				  }).catch(err => err)
					if(confirmResult !== 'confirm') {
						return this.$message.info('已取消删除')
					}else {
						const {data:res} = await this.$http.delete('roles/' + id)
						if(res.meta.status !== 200) {
							return this.$message.error('删除用户失败，请检查网络')
						}else {
							return this.$message.success('已删除该用户')
							this.getRolesList()
						}
					}
					
			},
			//根据id删除对应的权限
			async removeRightById(role,rightId) {
				//提示用户是否要删除
				 const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
			     confirmButtonText: '确定',
			     cancelButtonText: '取消',
			     type: 'warning'
			   }).catch(err => err)
				 
				 if(confirmResult !== 'confirm') {
					 return this.$message.info('删除已取消')
				 }else {
					  const {data:res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
						
						if(res.meta.status !== 200) {
							return this.$message.error('删除取消失败！')
						}else {
							role.children = res.data
							this.$message.success('已删除权限')
						}
				 }
			},
			//展示分配权限的对话框
			async showsetRightDialog(rolesc) {
				this.roleId = rolesc.id
				//获取所有权限的数据
				const {data:res} = await this.$http.get('rights/tree')
				if(res.meta.status !== 200) {
					return this.$message.error('获取所有权限失败！')
				}else {
					this.rightslist = res.data
				}
				console.log(rolesc)
				this.getLeafKeys(rolesc,this.defKeys)
				this.setRightDialogVisible = true
			},
			//通过递归的形式，获取角色所有三级权限
			getLeafKeys(node,arr) {
				if(!node.children) {
					return arr.push(node.id)
				}
				
				node.children.forEach(item =>this.getLeafKeys(item,arr))
			},
			//点击分配权限确认按钮
			async allotRights() {
				const keys = [
					...this.$refs.treeRef.getCheckedKeys(),
					...this.$refs.treeRef.getHalfCheckedKeys()
				]
				const idStr = keys.join(',')
				const {data:res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
				if(res.meta.status !== 200) {
					return this.$message.error('更新权限失败！')
				}else {
					this.$message.success('更新权限成功')
					this.getRolesList()
					this.setRightDialogVisible = false
				}
			}
				




		}
	}
</script>

<style scoped>
	.font {
		font-size: 8px;
	}
	.el-tag {
		margin: 7px;
	}
	.bdtop {
		border-top: 1px solid #EEEEEE;
	}
	
	.bdbottom {
		border-bottom: 1px solid #EEEEEE;
	}
	.vcenter {
		display: flex;
		align-items: center;
	}
</style>
